Last data update: 2014.03.03
R: Merge ICD-9-CM diagnostic and procedure codes
merge_icd9_dx_and_procs R Documentation
Merge ICD-9-CM diagnostic and procedure codes
Description
Merges a dataframe containing ICD-9-CM diagostic codes with a dataframe containing ICD-9 procedure codes
Diagnostic codes are prefixed with 'D', while procedure codes are prefixed with 'P'
Usage
merge_icd9_dx_and_procs(dx_df, proc_df, icd9dxvar = "icd9cm",
icd9pvar = "icd9cm")
Arguments
dx_df
a data frame with at least two columns, specified as idvar
and icd9dxvar
, where the values are ICD-9 diagnostic codes
proc_df
a data frame with at least two columns, specified as idvar
and icd9pvar
, where the values are ICD-9 procedure codes
icd9dxvar
name of icd9 diagnostic code column, default "icd9cm"
icd9pvar
name of icd9 procedure code column, default "icd9cm"
Value
a merged dataframe with common columns and "icd9cm"
Examples
cases <- data.frame(id=c(1,2),
icd9dxlist=c('162.4,070.30,155.0,401.9','996.52,E878.8,V45.86'),
icd9plist=c('38.16','38.42'))
dx_df <- melt_icd9list(cases, "id", "icd9dxlist")
proc_df <- melt_icd9list(cases, "id", "icd9plist")
merge_icd9_dx_and_procs(dx_df, proc_df)
Results